Automatic mechanical movement Calibre 4130, self-winding, 28800 vph, 72 hour power reserve. Chronometer certified precision. Chronograph function with three sub-dials: 60 second, 30 minute, 12 hour. Analog dial with black background, silver-tone luminous hands and hour markers, minute markers around the outer rim. Sapphire crystal glass crystal. Stainless steel case with silver-tone bezel and bracelet, screw-down crown, solid case back. Oyster bracelet. Round shape, 40 mm diameter. Fold-over clasp with safety release. Water resistant to 100 meters / 330 feet. Swiss Made. Pre-owned luxury watch.